INT. UNIVERSITY HALLWAY — EARLY MORNING
内景 · 大学走廊 · 清晨
A half-erased equation covers the board. A custodian caps the chalk as a professor approaches.
黑板上留着一组擦到一半的方程。清洁工盖好粉笔，教授正朝这里走来。
PROFESSOR
You reached the right answer without showing the proof.
你得出了正确答案，却没有写出证明过程。
CUSTODIAN
The answer is a result. The proof is the reason it has to be true.
答案是结果。证明解释了它为什么必然成立。
PROFESSOR
Then show me where the first assumption enters.
那就告诉我，第一个假设是从哪里引入的。
CUSTODIAN
Here. Once this term is fixed, the rest can be derived.
这里。一旦这一项确定，其余部分都可以推导出来。
He circles one quiet symbol and leaves the chalk on the ledge.
他圈出一个不起眼的符号，把粉笔留在黑板槽里。
